The abstract is read at the publisher; the summary is JClub's.
Greater early sleep instability in acute psychiatric inpatients is linked to prolonged post-enrollment hospitalization, with actigraphy-derived intraindividual sleep variability showing adjusted OR 2.30 per 1-hour increase.
- Why it matters: Prolonged length of stay is clinically and operationally important, yet early, practical markers of which patients will remain hospitalized longer are limited.
- What they did: In 94 consecutive acute psychiatric inpatients, researchers computed intraindividual sleep variability as the within-person standard deviation of nightly total sleep time from 5–7 actigraphy and routine nursing observations, then modeled prolonged post-enrollment LOS (>24.0 days) using age- and sex-adjusted logistic regression.
- The result: Actigraphy-derived IISV was associated with prolonged post-enrollment hospitalization (adjusted OR 2.30; 95% CI 1.08-4.93; P=.03; AUC 0.756), nursing-derived IISV showed a similar association (adjusted OR 3.10; P=.03), and combining both measures did not improve discrimination beyond actigraphy alone.
The findingWhy it mattersWhat they didThe result
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